Business Acquisition (Schedule of Finite-Lived and Indefinite-Lived Intangible Assets Acquired) (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2018	Jun. 01, 2018
Business Acquisition, Acquiree - L'Orange [Member]
Business Acquisition [Line Items]
Intangible assets	$ 573,427	$ 573,427
Business Acquisition, Acquiree - L'Orange [Member] | Trade Name [Member]
Business Acquisition [Line Items]
Intangible assets		67,298
Process Technology [Member]
Business Acquisition [Line Items]
Weighted Average Useful Life	22 years
Process Technology [Member] | Business Acquisition, Acquiree - L'Orange [Member]
Business Acquisition [Line Items]
Intangible assets		74,260
Customer Relationships And Contracts [Member]
Business Acquisition [Line Items]
Weighted Average Useful Life	22 years
Customer Relationships And Contracts [Member] | Business Acquisition, Acquiree - L'Orange [Member]
Business Acquisition [Line Items]
Intangible assets		388,705
Other Intangible Assets [Member]
Business Acquisition [Line Items]
Weighted Average Useful Life	3 years
Other Intangible Assets [Member] | Business Acquisition, Acquiree - L'Orange [Member]
Business Acquisition [Line Items]
Intangible assets		232
Backlog [Member]
Business Acquisition [Line Items]
Weighted Average Useful Life	1 year
Backlog [Member] | Business Acquisition, Acquiree - L'Orange [Member]
Business Acquisition [Line Items]
Intangible assets		$ 42,932